NEW YORK, Sept. 25, 2015 — With the fall TV season having its official start this week, the emphasis was on reviews of new shows in three out of five of this week’s MediaPost TV blogs — Monday, Tuesday and Thursday.

Also this week: The return of Brian Williams and, to close out the week, a report card grading the presidential candidates’ appearances on the late-night shows this month.

Read all five of my MediaPost TV blogs from the past week with these handy, convenient links: